Final answer:
Jyoti would get 6 pieces of rope, each 3.5 m long, from cutting a 21 m rope. If she started with a 42 m rope, she would get 12 pieces.
Step-by-step explanation:
Jyoti cut a 21 m long rope into pieces of 7/2 m length each. To find out how many pieces she would get, we need to divide the total length of the rope by the length of each piece.
- Length of rope: 21 m
- Length of each piece: 7/2 m or 3.5 m
We calculate the number of pieces by performing the division:
21 m ÷ 3.5 m = 6
Therefore, Jyoti would get 6 pieces of rope, each 3.5 m long.
If Jyoti started with twice the length of rope, meaning 42 m, and again cut the rope into pieces of 7/2 m, the calculation would be:
42 m ÷ 3.5 m = 12
Therefore, with twice the length of rope, Jyoti would get 12 pieces.